<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">
<?php

// Begin the session
session_start();

// To avoid case conflicts, make the input uppercase and check
against the session value
// If it's correct, echo '1' as a string
if(strtoupper($_GET['captcha']) == $_SESSION['captcha_id'])
    echo 'true';
// Else echo '0' as a string
else
    echo 'false';

?>
